0 Invalid calendar!

Call Stack

# Function Location
1 () JROOT/components/com_dpcalendar/controllers/ical.php:38
2 DPCalendarControllerIcal->download() JROOT/libraries/src/MVC/Controller/BaseController.php:730
3 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_dpcalendar/dpcalendar.php:27
4 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71
5 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73
6 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
7 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:218
8 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:261
9 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:306
10 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58
11 require_once() JROOT/index.php:32